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Hydrangea Cane Borer: Prune Out Infested Stems

Cane borers tunnel into hydrangea stems. Insecticides don't reach them. Cut stems lower until you find clean wood, destroy clippings. Repeat annually to reduce population.

About Gardening: Heavy Acorn Crop: Mast Year, Not Weather Prediction; 30-Year-Old Yucca: Spring Repotting and Propagation Plan; Reviving a Fading Easter Hydrangea in Zone 9: Repotting, Acidic Water, and Rest; Hydrangea: Indoor Care Secrets for Success; Managing Cane Borers in Hydrangeas: Prune Out the Damage; Transplanting a Mature Hydrangea with a Delay; Red-Necked Cane Borer in Thornless Blackberries; Pruning Oakleaf Hydrangea: Timing and Technique; Rose Cane Borers: Identification and Prevention for Knockout Roses; Hydrangea Virus: Chlorotic Mottle—Remove Infected Plant

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